LAS VEGAS - Beyond Floyd Mayweather's disclosed $100 million purse, and the $30 million Conor McGregor will take home, their August 26 super fight is having a drastic impact on the Nevada economy. And it's not all above the line.

While Las Vegas sportsbooks are selling betting slips at record numbers nearing $60 million, and another (estimated) $80 million will be collected at the T-Mobile Arena gate, 'The Money Fight' has propped up its own local black market, where upstart merchants are hoping to cash in on the biggest fight in combat sports history, even if it's on consignment.

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"I'm hoping to sell 15 dozen (t-shirts)," offered a source who only spoke on the condition of anonymity, aware that hawking counterfeit goods on the Las Vegas strip is completely illegal.

The proposition of a quick and easy payday peddling fake Mayweather-McGregor merchandise at $10 a pop was enough for a handful of local upstarts to hit Las Vegas boulevard at sundown. Unfortunately for the merchants, there was not a full realization of the larger economic picture of their enterprise.

Not all fans in town for the Mayweather-McGregor fight want to shell out big bucks for the official gear. (JOHN GURZINSKI/AFP/Getty Images)

Questioned about how much profit the sales would net, our source failed to offer a rebuttal. In fact, there was no legitimate understanding of the economics behind the business, which is based on fake consigned goods and capitalizing on the influx of tourists in town for a once-in-a-lifetime event, just hoping to take home a souvenir.

This black market is never factored into the "drop," a colloquialism referring to the overall intake of goods, services, merchandising, and betting dollars accumulated during major event weekends. And while it's easy to tally hotel and restaurant rates, along with action at the sports book, street hustlers slanging MayMac t-shirts never quite factor into the broader context of legitimate Las Vegas economics, even if the "drop" is expected to hit record levels this weekend.

In stark contrast to the UFC's International Fight Week, or other big MMA event weekends, the black market for merchandise has been much more visible during this very special fight week. And while the UFC keeps knockoffs to a minimum, instead directing fans to official merch tables or the Las Vegas Fight Shop, boxing brings out the bootleggers and upstart entrepreneurs.

In reality, these merchants service the tourist contingent in a much needed way. Not everyone has an extra $35 lying around for an official t-shirt, or $80 (including tax) for a single commemorative McGregor glove after spending thousands on tickets, airfare and hotels.

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Derek Brannon, who traveled from Northern Ireland with his wife, daughter, and 15 year-old son Shea to witness the biggest fight in history, made the decision to fly across the Atlantic just last week, when ticket prices began to cool on the resale market. Derek was able afford to fly the entire family out, although only father and son will be attending the historic fight.

"We booked it last week to come out ... we decided to go, and we got an option for two tickets and we took them," offered Bannon the elder. "My wife and daughter's here as well. They're up in another part of the seats. These VIP seats we couldn't get them. So they're not going to the fight. They're just going to enjoy Vegas."

For the record, it was son Shea who turned his father on to McGregor-mania, but when dad foots the bill for four, the prospect of counterfeit goods, discounted by more than 70% percent a unit, suddenly becomes a viable option.

Truth be told, many people entertain the possibility of knockoff souvenirs, so long as the value is good. But with Las Vegas police department presence prevalent all along the strip increasing with every day as the super fight approaches, the counterfeiters systematically retreat in an effort to avoid arrest and prosecution.

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Las Vegas is cashing in on the most-hyped fight in years. (Ethan Miller/Getty Images)

So heavy is police presence this weekend, in fact, that the LVPD is treating what is historically a rather quiet weekend at the tail end of summer more like New Year's Eve or the Fourth of July.

"We are constantly evaluating the ever changing world climate and learning from events," commented Las Vegas Metropolitan Police Department Sergeant Jeff Clark during an interview with the Mirror.co.uk.

The presence of Clark and his colleagues took a drastic turn on Friday, when previously, foot traffic on the strip was rather calm and sparse, allowing counterfeiters to push their commodities.

From black market goods and a distinct LVPD presence, to an influx of last-minute foreign visitors, Las Vegas has hit a fever pitch for this record-breaking Mayweather vs. McGregor weekend. The city is buzzing with energy for the biggest, highest grossing fight in combat sports history, and everyone, even those who lack a concrete understanding of macroeconomics, want to carve out their own slice of the MayMac pie.